bad engine performance today

Blueskies wrote:
"buttman" wrote in message
oups.com...
Today I was doing some touch and go's in a C152 with one of my
students to prepare for his first solo. It was a very hot day (35C),
but density altitude was only 2500 or so.



I'm surprised no one mentioned gross weight...

he didnt say mx was in it. ;~/

"buttman" wrote in message
oups.com...
Today I was doing some touch and go's in a C152 with one of my
students to prepare for his first solo. It was a very hot day (35C),
but density altitude was only 2500 or so.

I noticed as we were climbing upwind, the plane was climbing very
slowly, even right at Vy. The runway is very long (11,800 ft), but
when we reached the opposite threshold, we were only about 500 AGL.
Normally at the end of the threshold we are between 900 and 1000 AGL,
and thats with switching to cruise climb after 500 AGL...

Then when we got to downwind, my student pulled the power back to 2300
RPM (cruise) and we were only able to hold about about 70 knots (90
knots is normal).
...


How did it fly later in the day after the pastic bag fell off the landing
gear?

:-)

--
Geoff
The Sea Hawk at Wow Way d0t Com
remove spaces and make the obvious substitutions to reply by mail
When immigration is outlawed, only outlaws will immigrate.

On Apr 30, 3:54 pm, Jose wrote:
The magnet causes eddy currents in a bit of aluminum which
causes the aluminum to have a magnetic field...

Thanks.

Jose
--
Get high on gasoline: fly an airplane.
for Email, make the obvious change in the address.

The magnet spins inside an aluminum cup, and the cup drives the
neele. No pulses generated, just a rotating current in the cup that
generates an opposing field that drags the cup around against a small
spring.

Dan

On Apr 30, 10:47 am, "ManhattanMan" wrote:
ktbr wrote:
carb ice... 150's can be very susceptable.

Did you try to apply carb heat?

@ 35º C ?

Yes, at 35°C, though it won't be heavy icing. See this
chart:
http://www.carneyaviation.com/images/carbice.gif

It all depends on the relative humidty (dewpoint for
pilots). We've seen carb icing here on the dry prairies on summer
mornings. And we often hear of accidents caused by carb ice because
students aren't getting taught much about it and don't recognize it,
nor do they think it's possible at high ambient temps. Ignorance kills
way too many PPLs.

Dan

ManhattanMan wrote:
ktbr wrote:

carb ice... 150's can be very susceptable.

Did you try to apply carb heat?


@ 35º C ?


The only time my old Lycoming ever iced up was on a beautiful summer day.

Margy